diff --git a/docker/client.py b/docker/client.py
index b811d36c96..6e8b2789d4 100644
--- a/docker/client.py
+++ b/docker/client.py
@@ -60,6 +60,7 @@ def __init__(self, base_url=None, version=None,
         if base_url.startswith('http+unix://'):
             self._custom_adapter = UnixAdapter(base_url, timeout)
             self.mount('http+docker://', self._custom_adapter)
+            self._unmount('http://', 'https://')
             self.base_url = 'http+docker://localunixsocket'
         elif base_url.startswith('npipe://'):
             if not constants.IS_WINDOWS_PLATFORM:
@@ -368,6 +369,10 @@ def _get_result_tty(self, stream, res, is_tty):
                 [x for x in self._multiplexed_buffer_helper(res)]
             )
 
+    def _unmount(self, *args):
+        for proto in args:
+            self.adapters.pop(proto)
+
     def get_adapter(self, url):
         try:
             return super(Client, self).get_adapter(url)